WICHITA, Kan. (AP) — Wichita police have turned to Facebook in search of two men who are believed to have committed crimes of a sexual nature in public places.

KAKE-TV (http://bit.ly/1ao6DDj) reports it’s the first time the department has used social media to seek help in solving a sex crime. Police aren’t saying exactly what the two men are accused of doing, other than to say it’s not rape.

Police say one reason they’re staying vague is that revealing too much too soon could hurt their case. They also say they have to be more careful what they say when dealing with sex crimes.

Spokesman Lt. Doug Nolte says Facebook has become one of the department’s best crime-fighting tools since it joined the site in 2009.